CCNP ENCOR // Address Resolution Protocol (ARP) // ENCOR 350-401 Complete Course
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- Опубликовано: 29 июн 2024
- Free CCNP ENCOR 350-401 Flashcard/Labs: jitl.jp/encor-files
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💻ENCOR NetSim: jitl.jp/encor-netsim
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This video covers Address Resolution Protocol (ARP), including topics like proxy ARP and gratuitous ARP.
In this FREE and COMPLETE course for CCNP ENCOR 350-401, you will find lecture videos covering all topics in the Cisco official exam topics list, end-of-video quizzes to test your knowledge, flashcards to review, and practice labs to get hands-on experience. All you need in a single course, for free!
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0:00 Introduction
0:50 Things we'll cover
1:29 Layer 2 & Layer 3 Addresses
3:45 ARP
7:57 ARP Message position in Frame
8:51 ARP Message Format
11:02 ARP Process
12:45 ARP Process debug
15:07 ARP Packet Captures
16:35 ARP Table (IOS)
18:23 Incomplete ARP Entries
19:58 Proxy ARP
22:24 Proxy ARP - Mismatched Subnet Mask
24:52 Proxy ARP - Directly-Connected Static Route
29:01 Gratuitous ARP
32:59 Manual ARP Entry Configuration
34:36 Clearing Dynamic ARP Entries
36:22 Dynamic ARP Aging
40:22 Command Review
40:41 Things we covered
41:14 Quiz 1
42:31 Quiz 2
43:08 Quiz 3
43:56 Quiz 4
44:52 Quiz 5
46:03 Thank you to supporters
Corrections:
29:01 The network address should be 192.168.1.0/24, not 192.168.123.0/24.
#ccnp #encor 
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Jeremy, if there was a teaching RUclips hall of fame, you are 1st ballot for sure!!!
Keep up the great teaching!!!
hey my name is Daniela and this is my boyfriennd's account, i wanted to comment that the video is really boring but he said that its really good, so i will respect him . I still didnt understand a word you said, but i guess now i will use this video eavch time i want to seem smart. thank you creator of this video, have a good day, i love you....
Leave your man studying
Your videos are making my ENCOR learning journey so much fun! Thanks a ton, Jeremy!
you are the best instuctor i like your way teaching thanks alot
All I can say is thank you.
Amazing Video, This was an amazing refresher. I didn't know how much I forgot from CCNA and Net+.
Thanks! That's one of the reasons I'm including these fundamentals at the beginning of the course (also so we can dig deeper than in the CCNA course)
Thank you very much for this series, Jermey! I am learning in better way....keep it up
Your tutorial's and your explanation amazing.
boatload of information....Awesome!
Your slides and icons is better than anything :)
That was perfect ! thanks a lot !
In gratuitous ARP slide (time: 31:16), shouldn't the network address be 192.168.1.0/24 instead of 192.168.123.0/24?
R1's IP address is said to be 192.168.1.1/24.
B.T.W. Jeremy, Amazing presentations! Thanks so much!
Oops, yeah you're right about that. Seems I changed the addressing scheme but forgot to update the network address in the diagram!
thank you so much, right before my presentation
Great video, I love it. Thank you.
Thank you Jeremy
Thanks Jeremy for explaining Gratuitous ARP (Sending ARP Reply without being Requested)
Amazing :) i didn’t learn with ccna
thank you so much Jeremy good video
Yes, me too all I can say is thank you.
Very grateful
well done Jeremy
thank you for your best cours
35:00 now I know the answer to that mysterious GARP message followed by unicast ARP requests in the Wireshark file from the previous video. 🙂
Anoher cracking video. Arp Aging was interesting, not seenit covered in that detail anywhere else.
You are cramming a lot in to each video which is great, I know you wanted to try and get the length down a bit, but I am finding the content verse length good at the moment.
Thanks Simon! I haven't been very successful at keeping the video lengths down so far, but when we get to bigger topics like STP, OSPF, etc. I will be breaking them down into smaller videos!
Thank you !
Great video.
You da best
Thakyou for this sir.
Good stuff as always. I kinda miss the bonus Exsim question at the end.
Thanks bro....
Informative
Tnanks a lot !
Had to watch the Dynamic ARP aging one over again because I got confused for a second thinking I had to wait 4 hours to make sure an ARP entry was gone.
Thank you for this video Jeremy, correct me please about if we can say that a packet is also transmitted inside the router from the incoming port to the outgoing port??? Since the router rewrite the frame of the source Mac address of the ingress port to the egress one
Hi Jeremy ,thank you for the great videos. Kindly advise how I can get the CML file as i need to follow up using GNS3.
Great video!
Just one doubt for GARP how the packet is flowing having the same source and destination ip ..wasn't it supposed to get dropped?
Hi Jeremy. Glad to buy your ENCOR course already. Very informative. Do not get any video after TCP MSS Lab. Any update?
Hi Debasish, thanks for your support! I'll upload each video on Teachable after I finish making it.
Welcome to Msc on Networking..... I mean Jeremysitlab...
Jeremy, please if you can use diagram interfaces G0/0, G0/5 , G0/3 on the R1+R2+R3+R4, etc ... not only G0/0 In R1 and G0/0 in R2 ... it can be easier to understand because some of us have not good English language
Great job!
Do you also have ccnp security course on platforms like udemy?
hello jeremy what resources do you use to study Mpls , l2vpn , l3vpn, vpls I don't find any good resources when I search about it
none of arp come in exam. Good to know
During ARP probe, ARP can't send broadcast address outside of the network because the broadcast domain is separated therefore can't be routed. so implementing a proxy arp helps to resolve this solution. Correct?
at minute 12-09 you say that R1 sends an ARP broadcast and that is understandable but when you say that if there are more hosts in the segment they will all receive the frame, you mean the interfaces directly connected to R1 that can receive broadcast messages oh you You mean ah R2 that you will receive message broadcast. that point ah many were not clear
we know how ARP works at L2 level but in this parts we are confused
Hi Jeremy! Could you explain the reason for the source and destination IPs being the same when it comes to gratuitous ARP? (31:16)
If a device restarts or experiences an IP address conflict (where another device claims the same IP), it can send a gratuitous ARP to check if the IP is already in use. The device sends an ARP request with its own IP as both the source and destination. If it receives a reply, it knows that there's an IP conflict, and it can take appropriate action to resolve it.
Can I get slides for these lectures
Hi Jeremy. At 16:10 you said: "In the target MAC address field, notice as I pointed out before that the target MAC address of the ARP request is all 0’s, even though the destination MAC of the Ethernet header is all F’s." What does it mean?
It means the destination MAC address of the frame is ff:ff:ff:ff:ff:ff, but the target MAC address of the ARP message is 00:00:00:00:00:00
@@JeremysITLab thank you sir
Why would the ether type not be 0x0806 since this is an ARP message? I’m guessing it is Bc the protocol used to send the arp message is IPv4 and not ARP even though the data contained in the packet is an ARP request. Is this accurate?
The EtherType of ARP messages is 0800. Are you referring to the PTYPE field in the ARP message? That's a different field than EtherType, so it is set to indicate IPv4 (because it's an ARP message for an IPv4 address).
@@JeremysITLab Yes I was looking at the pcap wrong. I was looking at the PTYPE field inside the ARP message and was mistaking that for the EtherType field. I just reloaded the PCAP in Wireshark to review and looked under the Ethernet II section and it is in fact ARP (0x0806) for the EtherType like I thought it should be. Sorry for the confusion!
will this course be available on udemy? need the pdf slides like the ccna course
It's available at courses.jeremysitlab.com
(Make sure you read the sales page before buying!)
The video is so long
Yep, my longest video.
You want to learn or half learn? That's the question. This should be considered ccie level "on paper", the ocg is the same.
@@LakedaimonIIfk
Thank you Jeremy